Server Automation : OGFS / Log in to Server permissions

I'm deploying Server Automation 7.81 with a customer.I created opsware user and assigned them to a group namedd "Admin Windows" with full permissions on windows servers.In the OGFS permissions I set the Log in to Server permissions to Administrator.The problem is that the customer don't have Administrator account but Admin_"hostname" account.So the admin account is different for each server...Is there a workaround for that problem ?